Establish on the pump the special tool, the voltmeter and the battery.

1 — the pump

Tighten an adjusting bolt of the special tool against the stop and close its lateral opening for air check by means of a fuel hose as a deaf stopper. Special tool (A): 09918-18110.

Check, that the motor started to work (its sound) when the battery is connected was audible, and stopped, when the specified pressure is reached. Check, whether there is no leakage of air. The specified pressure: 30.0-45.0 kPa (0.30 – 0.45 kg/cm2, 4.25 – 6.40 pounds on sq. inch).

Check, that indications of the voltmeter were within given below values:

When the motor works: 0–1 Volt

When the motor ceased to work: 10-14 Volts

Let's to the motor work continuously more than 10 seconds that it did not break.